Yup, one way, narrow, no guard rails...my kind of road.
Anyhow, if we start up to Mt. Tam via Panoramic Hwy, and then meet up with Fairfax Bolinas Rd, that should all be two-lane stuff and paved. That'd be a lot safer for passing cyclists and all. There will be some points along the road that will get really tight. I don't want anyone speeding...the road gets really wet in the shade and it's hard to see so if you're carrying too much speed, you will spin out.
Anyway, here's the revised route.
from:Unknown road @37.894910, -122.637830 to:37.897072,-122.616005 to:E Ridgecrest Blvd @37.927317, -122.580509 to:Fairfax Bolinas Rd @37.963543, -122.631907 to:Center Blvd @37.985854, -122.582878 - Google Maps
Lots of scenic stuff along this route, so take plenty of breaks and pics.